In Spring/Summer 2017 there was an increase in Haitian nationals from the United States, entering Canada, reaching numbers as high of 7,787 (Government of Canada, 2019). This increase in irregular migration was covered by various news outlets and Canadian government officials addressed this as a ‘problem’. Given this important media and political reality, this thesis sought to explore the media representation of Haitian irregular migration. More specifically, I examine the media’s depiction of Haitian asylum seekers as well as the nation. Therefore, the goal of this thesis is to contextualize this media representation within a wider socio-political context. Through a Critical Race Theory perspective, I conduct a qualitative content analysis of news media articles published in the Toronto Star and The Globe and Mail. The analysis reveals that the nation is imagined as innocent while the asylum seekers are constructed as threats. This thesis goes on to demonstrate how the media has relied on a discourse of inclusion/exclusion and of victimization in order to positively imagine the nation. Meanwhile, by framing asylum seekers’ motivations for entering Canada as frivolous and by utilizing techniques of vilification, the media is able to delegitimize the asylum seekers’ claims. Finally, this thesis concludes that the media has a tendency to omit the socio-political context of its portrayal of the asylum seekers and of the nation. Therefore, it is important for the media to accurately represent irregular migration in order to expose global inequalities.

Collective cell migration is an important feature of wound healing, as well as embryonic and tumor development. The origin of collective cell migration is mainly intercellular interactions through effects such as a line tension preventing cells from detaching from the boundary. In contrast, in this study, we show for the first time that the formation of a constant cell front of a monolayer can also be maintained by the dynamics of the underlying migrating single cells. Ballistic motion enables the maintenance of the integrity of the sheet, while a slowed down dynamics and glass-like behavior cause jamming of cells at the front when two monolayers—even of the same cell type—meet. By employing a velocity autocorrelation function to investigate the cell dynamics in detail, we found a compressed exponential decay as described by the Kohlrausch–William–Watts function of the form C(δx)t ∼ exp (−(x/x0(t))β(t)), with 1.5 6 β(t) 6 1.8. This clearly shows that although migrating cells are an active, non-equilibrium system, the cell monolayer behaves in a glass-like way, which requires jamming as a part of intercellular interactions. Since it is the dynamics which determine the integrity of the cell sheet and its front for weakly interacting cells, it becomes evident why changes of the migratory behavior during epithelial to mesenchymal transition can result in the escape of single cells and metastasis.

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Residency or emigratory responses were triggered in bluegills 6.0-8.0 cm TL and 10.0-12.0 cm TL by availability of resources. Individuals became residents if resources were present and not at carrying capacity. Individuals in excess of carrying capacity emigrated. Carrying capacity of bluegills 6.0-8.0 cm TL increased with increased food availability. Carrying capacity also increased with increased cover. Bluegills 10.0-12.0 cm TL did not respond to changes in cover. The two sizes reacted differently when the initial number introduced into pools was varied. Single bluegills 6.0-8.0 cm TL established residency whereas bluegills 10.0-12.0 cm TL required the presence of at least one other bluegill before establishing residency. Competition between size classes were prevented by habitat segregation in which smaller fish used areas with cover and larger fish areas of open water. These results indicate that bluegills have evolved innate, stereotypic fixed action patterns for individually assessing resources by becoming residents if resources are present and numbers below carrying capacity or emigrating if resources are absent or numbers at carrying capacity. These findings suggest that the long history of overpopulation and stunting of bluegills in closed areas is due to the absence of an emigratory avenue.

by Kwok Yun-kwong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references (leaves 156-162). / Acknowledgments --- p.ii / Abstract --- p.iii-iv / Content --- p.v-vi / Chapter Chapter I. --- Introduction --- p.1 / Chapter Chapter II. --- Theoretical Models of Migration --- p.4 / Chapter II.1. --- Labor Surplus Model / Chapter II.2. --- Todaro Model / Chapter II.2.a. --- Corden and Findlay's(C-F) Extension / Chapter II.2.b. --- Extension to the (C-F) Extension / Chapter II.3. --- Labor Heterogeneity / Chapter II.4. --- Computable General Equilibrium Models / Chapter Chapter III. --- Situation of Interprovincial Migration in China --- p.28 / Chapter III.l. --- Definitions of the Floating Population / Chapter III.l.a. --- De jure Definition / Chapter III.1.b. --- De facto Definition / Chapter III.2. --- Flowing Patterns of the Interprovincial Migration / Chapter III.2.a. --- Interprovincial Migration Data / Chapter III.2.b. --- Provincial Net Migration / Chapter III.2.C. --- Interprovincial Flow Pattern / Chapter Chapter IV. --- Methodology of Empirical Analysis of Migration --- p.38 / Chapter IV.l. --- Multiple Regression Models / Chapter IV.l.a. --- Net Migration Approach / Chapter IV.l.b. --- Origin Destination Approach / Chapter IV.l.c. --- Effects of Other Places / Chapter IV.2. --- Simultaneous Causality Bias / Chapter Chapter V. --- Migration Functions of China --- p.48 / Chapter V.l. --- Approach and Scope / Chapter V.2. --- Basic Dependent Variable and Explanatory Variables / Chapter V.2.a. --- The Dependent Variable / Chapter V.2.b. --- Explanatory Variables / Chapter V.3. --- Model Specification / Chapter V.3.a. --- Linear Regression Models / Chapter V.3.b. --- Double Log model and Box-Cox Trans format ion / Chapter V.3.c. --- Log-Linear Formulation / Chapter Chapter VI. --- Estimation Results of the Total Interprovincial Migration Model --- p.75 / Chapter VI.l. --- Effects of the Industrial Structure / Chapter VI.2. --- Wage System / Chapter VI.3. --- Town-Village Enterprises / Chapter Chapter VII. --- Interprovincial Rural-Urban Migration --- p.90 / Chapter VII.l. --- The Nature of Interprovincial Rural-Urban Migration / Chapter VII.2. --- Estimation Results of the Interprovincial Rural-Urban Migration Function / Chapter VII.3. --- Rational Migration or Blind Flow (Mangliu)？ / Chapter Chapter VIII. --- Conclusions and Policy Implications --- p.104 / Appendix 1-3 --- p.111 / Figures 1-3 --- p.119 / Tables1-30 --- p.121 / Bibliography and Data Sources --- p.156

Thesis (Ph. D.)--University of Washington, 2002. / Vita. Includes bibliographical references (leaves 359-376).

Thesis (M.A.)--University of San Carlos, March, 1977. / Vita. Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 160-165).

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Diss.--Universität Saarbrücken, 1993. / Bibliogr. p. 399-438.